Refrigerator-car



(No Model.)

T. N. ELY 81; J. W. CLOUD.

REFRIGBRATOR CAR.

No. 812,880. Patented Feb.. 2.4, 1885 jig;l

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THEODORE N. ELY AND JOHN W. CLOUD, OF ALTOONA, PENNSYLVANIA.

REFRIGERAToR-CAR- :JPECIFICATION forming part of Letters Patent No.312,830, dated February 24.-, 1885..

Application filed December 24, 1,884. (No model.)

T 0 @ZZ whom it may concern:

Be it known that we, THEODORE N. ELY and JOHN W. CLOUD, both of Altoona,Pennsylvania, have invented a new and useful Iniprovement inRefrige1'ator-Cars, of which J(he following is a full, true, andaccurate description', reference being had to the drawings forming partof this specification.

Our invention has reference to refrigeratorcars, and has for its objectthe production of a very low temperature by means of a constantcirculation of dry pure air, and also economy in the use of the icewhich we employ to cool thc air.

Our invention consists in the improvements hereinafter pointed out, andby which a refri gerator-car having the same general structure andcombination of parts, as is shown in Letters Patent No. 290,324, grantedto Ely, Oloud, and Vall, December 18, 1883, may be cooled to a lowertemperature than has heretofore been practicable, and at the same timehave a better and more rapid circulation of air.

Reference being now had to the drawings, in which similar lettersdesignate similar parts, Figure 1 is a longitudinal sectional view ofour improved car; Fig. 2, a cross-section through the upper part of oneend, and Fig. 3 an enlarged longitudinal section through to the upperpart of one end of the car.

A is the chamber to be cooled. B is the icebox at the top of the car. Cis the partition by which the cold-air chamber is divided from theice-boxes and lues, and it is made with its outer surfaces, or thoseparts exposed to the refrigerator-chambers, of a non-conductingmaterial, while on the interior it is preferably of metal. D is theopening or openings for the admission of air atthe top of the ice-box. Eis a prolongation of the nue F, by which an impetus is given to thecooled air before it enters the chamber, and in which it is dried, asdescribed in Patent N o. 290,324 aforesaid. G is a trough or box ofslats or grating, forming a second icebox. His a wire-nettingsurrounding the trough or box G. I is a trapdoor in the roof of the car,through which its iceboxes may be lled. B is a slatted grating placedover the inner metal skin, b, of the iceported.

The boxes G are4 placed at the ends of the car over the air-dues F. Theyare in open communication with ice-box B. We fill the slatted box G withbroken ice and salt, which are prevented from falling into the air-finesby the wire-netting H,which covers its sides and bottom and retains theice until it is entirely melted. The upper portion, B, of the ieebox wefill with ice without admixture of salt, and preferably in large pieces.Theair circulates through the car in the manner shown in Fig. l by thearrows. The warm air entering the iceboxes through openings D at the topof the car is cooled first by passing over and through the ice in theboxes B, then is still further cooled by passing over and around themixture of ice and salt in the boxes G,and then falling through theilues F, in which it deposits much of its moisture, it is introducedwith considerable impetus into the chamber A. The dues F should bemetal-lined, and preferably provided with diaphragms, as described inthe above mentioned Patent N o. 290,324. The freezing mixture of ice andsalt in the boxes G cools the air much more than a simple icebox; butthe rapid melting of this mixture would make its useincouvenient and toa large degree impracticable if it were used alone. lts melting,however,'is retarded, owing to the fact that the air before reaching ithas already parted with much of its heat by passing over and through theice in the box B. The airspace E, surrounding the box G, enables thecurrent of air flowing through the box B to enter the due F withoutactually passing through the broken ice and salt, the air passing overand around the box G,and,having a large surface of Contact with it. Thewater formed from the melting ice may be allowed to escape through atrap, as shown in Patent No. 290,324, or in any convenient manner.

Having now described our invention, what we claim as new, and desire tosecure by Letters Patent, is-- l. In a refrigerating-car substantiallyas described, the ice-box B, situated at the top of the car, and havingan opening, D, for the admission of air, in combination with the ice-boxG, connecting with itas and for the purpose specified.

2. lin a refrigeratingCar substantially as de-4 IOO scribed, the ice-boxB, situated at the top of G, having netting H on its sides and bottom,Io the oar, and having an 0pening,D, for the ztdund surrounded with anair-space, E, forming mission of air, in combination with the ice-box acontinuation of the iue F, as und for the G, connecting with it, and theflue F, as and purpose specified. for the purpose specified. THEO. N.ELY.

3. In arefrigerating-oar substantially as de- J NO. W. CLOUD. scribed,the ice-box B, situated at the top of Witnesses: the Car,and having anopening, D, for the ztd- V. H. ROHRER, mission of air, in combinationwith the ice-box' I W. SARGENT, J 1.

